Chaos Knight, in my estimation, is the hardest late game carry, provided he is not counter picked by the enemy team. If you spawn an extra Phantasm illusion and are carrying Manta Style, your damage output goes from 100% → 566%. (Let that sink in for a minute.) For the first ten minutes of the game, focus on farming up Power Treads and a Drum of Endurance so you have enough mana to use your abilities. Afterwards, start ganking or taking objectives because CK cannot farm effectively on the map.